دورية أكاديمية
Quantum superposition demonstrated higher-order topological bound states in the continuum
| العنوان: | Quantum superposition demonstrated higher-order topological bound states in the continuum |
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| المؤلفون: | Yao Wang, Bi-Ye Xie, Yong-Heng Lu, Yi-Jun Chang, Hong-Fei Wang, Jun Gao, Zhi-Qiang Jiao, Zhen Feng, Xiao-Yun Xu, Feng Mei, Suotang Jia, Ming-Hui Lu, Xian-Min Jin |
| المصدر: | Light: Science & Applications, Vol 10, Iss 1, Pp 1-8 (2021) |
| بيانات النشر: | Nature Publishing Group, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Applied optics. Photonics LCC:Optics. Light |
| مصطلحات موضوعية: | Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467 |
| الوصف: | Abstract Higher-order topological insulators, as newly found non-trivial materials and structures, possess topological phases beyond the conventional bulk-boundary correspondence. In previous studies, in-gap boundary states such as the corner states were regarded as conclusive evidence for the emergence of higher-order topological insulators. Here, we present an experimental observation of a photonic higher-order topological insulator with corner states embedded into the bulk spectrum, denoted as the higher-order topological bound states in the continuum. Especially, we propose and experimentally demonstrate a new way to identify topological corner states by exciting them separately from the bulk states with photonic quantum superposition states. Our results extend the topological bound states in the continuum into higher-order cases, providing an unprecedented mechanism to achieve robust and localized states in a bulk spectrum. More importantly, our experiments exhibit the advantage of using the time evolution of quantum superposition states to identify topological corner modes, which may shed light on future exploration between quantum dynamics and higher-order topological photonics. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2047-7538 |
| Relation: | https://doaj.org/toc/2047-7538 |
| DOI: | 10.1038/s41377-021-00612-8 |
| URL الوصول: | https://doaj.org/article/449f36f435814074926f468c99a8c22b |
| رقم الأكسشن: | edsdoj.449f36f435814074926f468c99a8c22b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20477538 |
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| DOI: | 10.1038/s41377-021-00612-8 |